|Title||Seismic Assessment of the RC building stock of Melbourne from rare and very rare earthquake events|
|Publication Type||Conference Paper|
|Year of Publication||2017|
|Authors||Hoult, RD, Goldsworthy, HM, Lumantarna, E|
|Conference Name||Australian Earthquake Engineering Society 2017 Conference|
|Publisher||Australian Earthquake Engineering Society|
This paper focuses on a seismic vulnerability assessment of the Australian reinforced concrete structural (or shear) wall building stock using the Melbourne CBD as a case study. Each of the 1403 reinforced concrete buildings used in the assessment are assumed to be laterally supported by rectangular (peripheral) or C-shaped core walls. The assessment was conducted based on the Capacity Spectrum method, which involves a comparison between the capacity and demand curves in the form of acceleration-displacement response spectra. Plastic hinge analysis expressions were used to derive the capacity curves of the buildings. The 500-year (“rare”) and 2500-year (“very rare”) return period spectra derived from a Probabilistic Seismic Hazard Analysis for the city of Melbourne using the AUS5 earthquake recurrence model were used for the earthquake demand. The Australian Seismic Site Conditions Map from Geoscience Australia is used to find the expected site conditions for each building, while SHAKE-2000 is used to amplify the expected earthquake demand. The results show that only 34 (2.4%) reinforced concrete buildings used in this assessment were deemed to reach the Collapse Prevention performance level for the 500-year return period event, whereas a total of 540 (38.5%) buildings were estimated to reach this performance level for the 2500-year return period event.